Surfactant Essays

  • Pulmonary Surfactant Report

    1327 Words  | 6 Pages

    Pulmonary surfactant Introduction Pulmonary surfactant is a complex mixture of phospholipids (PL) and proteins (SP) that reduce surface tension at the air-liquid interface of the alveolus, thus preventing its collapse during end-exhalation (Daniels, 2003; Malloy et al., 2005). It also participates in innate host defense against inhaled pathogens (Malloy et al., 2005). Surfactant is synthesized and secreted by Type II alveolar epithelial cells, also called pneumocytes, which differentiate between

  • Experiment Pulmonary Surfactant

    698 Words  | 3 Pages

    performed was to see what surfactant does and really is. As said by Mallinath Chakraborty, “Pulmonary surfactant is a complex mixture of specific lipids, proteins and carbohydrates, which is produced in the lungs by type II alveolar epithelial cells. The mixture is surface active and acts to decrease surface tension at the air–liquid interface of the alveoli.” Within our respiratory system our lungs have alveoli which contain a surfactant that help with water. Without the surfactant in the alveoli the

  • Pla Microsphere Lab Report

    779 Words  | 4 Pages

    Surfactants of emulsions are amphiphilic which means it contain both hydrophilic and hydrophobic groups. So when emulsion, the surfactant covers the surface of drops with its hydrophobic part in the drop and its hydrophilic part in the water. Typically, there are four types of surfactants: anionic, cationic, amphoteric and non-ionic. The anionic surfactants such as sodium dodecyl sulphate (SDS) release a negative charge in the

  • Ceo2-Zro2

    890 Words  | 4 Pages

    hexahydrate (Ce(NO3)3∙6H2O), zirconium (IV) oxynitrate hydrate (ZrO(NO3)2∙xH2O), 1-butanol, nitric acid (HNO3) and P123 surfactant (EO20-PPO70-PEO20) were the required chemicals. The required amounts of cerium oxide and zirconium oxide precursors (see Annex 7.2 for the calculation details) were dissolved in a solution containing respective amounts of 1-butanol, HNO3 and P123 surfactant. Then, the solution was placed in a water bath of 40 to 60 oC under magnetic stirring for further mixing. The obtained

  • Fetal Circulation Research Paper

    736 Words  | 3 Pages

    It affects premature infants because their lungs not fully develop and the lungs don’t have an insufficient surfactant. The surfactant is a complex phospholipid+ protein secreted by type 2 cell. It reduces surface the tension of alveolus. It keeps the alveoli open and prevents a collapse of the alveoli. When the surfactant is inadequate the alveoli will collapse, lung expansion will become more difficult ( compliance). Therefore, the infants can’t be able to breath

  • Phenol Concentration Lab Report

    1403 Words  | 6 Pages

    To investigate the effect of agitation time and feed concentration on percentage removal of phenol batch experiments were carried out at room temperature in the range of 100 to 700 mg/l of initial feed concentration and the results are shown in Fig. 2.Experimental conditions used were agitation speed of 200rpm, biosorbent dosage 0.15 g and pH 7.From figure it is observed that with increase in agitation time from 0 to 2 days, the percentage removal increased from 8% to 98%.Phenol adsorption from bulk

  • Critical Micelle Concentration Lab Report

    1074 Words  | 5 Pages

    Critical Micelle Concentration The CMC (Critical Micelle Concentration) is the amount of a surfactant molecule in a bulk stage, beyond which aggregates of surface active agents, so-called micelles. The CMC is a significant distinctive property of surfactants for its application. Generally molecules have two different constituents with differing attraction for the solutes. The component of the molecule that has an empathy for polar solutes, like water, is assumed to be hydrophilic. The component of

  • Meconium Aspiration Syndrome

    1271 Words  | 6 Pages

    alveolar cells, which secrete alveolar fluid (surfactant is a component of alveolar fluid). Surfactant is a mixture of phospholipids and lipoproteins, which serves to lower the surface tension of alveolar fluid, 30 preventing collapse of alveoli and maintaining their patency 8. Meconium, when aspirated into the lungs, deactivates surfactant. Research has also shown that meconium disturbs surfactant synthesis, with a study concluding that surfactant phosphatidylcholine (a phospholipoprotein which

  • Paramagnetism Research Paper

    2312 Words  | 10 Pages

    along with NaBH4. Iron chloride tetra hydrate (FeCl2.4H2O) (Moly Chem 98%), Cobaltous acetate (Co(CH3COO)2.4H2O) (sd-fine chem. Limited 99%) are the metal precursors used in this Co and FeCo synthesis, PVP (C6H9NO)n (sigma Aldrich 99.9%) acts as surfactant. 2.1 Synthesis of Co Nanoparticles 2.1.1 Experimental

  • Making Soap Essay

    1250 Words  | 5 Pages

    Making Soap 1.Define the following terms: triacylglycerol, saponification, surfactant, micelle. Answer: Triacylglycerol – An ester derived from glycerol and three fatty acids (from tri- and glyceride). Triglycerides are the main constituents of body fat in humans and other animals, as well as vegetable fat. Saponification – A process that produces soap, usually from fats and lye. Soaps are sodium or potassium salts of long chain fatty acids. When triglycerides in fat/oil react with aqueous NaOH or

  • Chromium Fluid Analysis

    737 Words  | 3 Pages

    al., 2010). This is attributed to their rapid oxidation, magnetization and high reactivity (Zhang et al., 2013; Zhou et al., 2015). One of the proposed method to overcome this drawback is to coat the nZVI particle surface with surfactants, upon rapid desorption of surfactants into the waste water the particle stability would markedly reduce. Alternate method introduces support to immobilize nZVI on surface, thus reducing agglomeration of nZVI. The immobilizer studies for such purpose includes, MWCNTs

  • Naproxen Essay

    2661 Words  | 11 Pages

    Chapter 7 Results 7. RESULTS 7.1 PREFORMULATION STUDY 7.1.1 Organoleptic Characteristics Organoleptic Characteristics was visually determined which was compliance with the standard. Table 7: Organoleptic characteristic of naproxen Properties Standard Observed 1 Appearance White crystalline White crystalline 2 Odor Odorless Odorless 43 Taste Bitter Bitter 7.1.2 Melting

  • Methyl Erucate Analysis

    2066 Words  | 9 Pages

    5. Results and Discussions 5.1 Methyl erucate synthesis 5.1.1 Chemical analysis of erucic acid Physicochemical properties of erucic acid used for the synthesis of sucrose erucate were analyzed. The results of analysis are depicted in Table 5.1 Table 5.1 Analysis of erucic acid Acid value 166.03 ± 0.9 mg KOH/gm Iodine value 78.04 ± 1.2 g I2/100gm Saponification value 168.05 ± 0.8 mg KOH/gm 5.1.2 Analysis of methyl erucate After synthesis and purification of synthesized methyl erucate general characteristics

  • Saponification Process Of Soap

    750 Words  | 3 Pages

    The saponification (a reaction in making soap) process is a base (usually NaOH or KOH) hydrolysis of triglycerides to make salt (soap) and glycerol. Alkalis such as Sodium carbonate and Sodium hydroxide are used to neutralize the fatty acid and convert it to a salt. The molecules crystallize differently depending on the base used. NaOH produces a harder bar while KOH is used more frequently for liquid soaps. In some cases, Lithium soaps are formed and produce much harder soaps. There are four

  • Capillary Electrophoresis Essay

    719 Words  | 3 Pages

    positive pole. The molecules that are hydrophobic (water hating) will tend to aggregate with the micelle, while those that are hydrophilic (water loving) will move fairly quickly through the solution. The key parameters for this technique are pH, surfactant concentration, any additives and the polymer coatings that are used on the capillary wall. Capillary zone electrophoresis (CZE) This is the most commonly used capillary electrophoresis method of the six being discussed. CZE, also known as free

  • Floor Strippers Research Paper

    932 Words  | 4 Pages

    Floor Stripper and Floor Finish Fundamentals If you want to offer floor care services for resilient tile inside your cleaning business, you should know a few of the terminology to be able to know how the harmful chemicals work. Following are the qualities for floor strippers and finishes, in addition to definitions of a few of the terminology you should know. Qualities of Floor Strippers: * The objective of floor draining chemicals would be to dissolve the present floor finish, so it may be removed

  • Meconium Aspiration Syndrome Case Report

    792 Words  | 4 Pages

    aspiration syndrome is one of the most common causes of respiratory distress in neonates. It may happen during antepartum or intrapartum periods and can result in airway obstruction, defect in gas exchange of the lung , pneumonia and dysfunction of the surfactant . It occurs as a result of fetal hypoxia that leads to increasing peristalsis with anal sphincter relaxation and reflex gasping. Aim: to determine the methods used for management , assessment and prognosis of meconium aspiration syndrome. Methods:

  • Essay On Enhanced Oil Recovery

    749 Words  | 3 Pages

    Obtaining the largest amount of oil possible from an oil reservoir is a task that oil production companies seek to improve. Currently, the recovery of oil can involve three separate phases. These phases include primary, secondary, and tertiary recovery. Tertiary recovery is also called enhanced oil recovery. Both primary and secondary recovery only recover twenty to forty percent of the oil in the ground; however, enhanced oil recovery can recover up to seventy-five percent of oil originally present

  • Fibroblast Research Paper

    2301 Words  | 10 Pages

    Fibroblast The fibroblast is the large cell type of the dermis. These cells are responcible for the formation of procollagen and elastic fibers. Procollagen is terminally cleaved by proteolytic enzymes into collagen which aggregates and turned into cross-linked. These tightly cross-linked collagen fibers allow tensile strength and resistance to shear and other mechanical forces.(9,10) Collagen makes up 70% of the weight of the dermis, primarily Type I (85% of the total collagen) and Type III (15%

  • Fungal Infections Essay

    1696 Words  | 7 Pages

    The epidemiology of fungal infections has changed during the last decade as well as dramatic improvements can be seen in the antifungal therapies [1]. Eventhough there is remarkable progress in diagnostic and antifungal drug research during the past 10 years, there still exists difficulties in prompt diagnosis and the complexity of the clinical characteristics makes the management of invasive fungal infections a great challenge. Fungal infections affect millions of people throughout the world and